Web Application Vulnerabilities Runtime SCA Findings
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DOMPurify Improper Neutralization of Input During Web Page Generation (Cross-site Scripting) Vulnerability - CVE-2026-49978 - Vulnerability Database
DOMPurify

DOMPurify Improper Neutralization of Input During Web Page Generation (Cross-site Scripting) Vulnerability - CVE-2026-49978

Medium
Reference: CVE-2026-49978
NVD Link: https://nvd.nist.gov/vuln/detail/CVE-2026-49978
Title: DOMPurify Improper Neutralization of Input During Web Page Generation (Cross-site Scripting) Vulnerability
Overview:

DOMPurify is a DOM-only cross-site scripting sanitizer for HTML MathML and SVG. Prior to 3.4.7 DOMPurify IN_PLACE sanitization could skip shadow contents attached to an element inside lttemplategt.content allowing attacker-controlled markup such as event handlers JavaScript URLs or scripts to survive and execute when an application cloned and inserted the sanitized template. This issue is fixed in version 3.4.7.